Spongebob Squarepants - Revenge Flying Dutchman cheats and cheat codes for Gamecube

Jelly fishing gear outfit
At the Krusty Krab, body slam the target. A tent will appear.

Mermaid man outfit
In downtown (construction site), deliver Krabby Patties to Patrick.

Reep blower outfit
Win 1st place in the 100 jelly fishing contest.

The Dutchman's Graveyard: Extra lives
When you are getting "booty", look around where you find the booty.
Whenever there is booty, there are some lives.